JP3867052B2 - Absorption chiller hot water regenerator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a high-temperature regenerator of an absorption chiller / heater, and more particularly to a high-temperature regenerator in which combustion vibration is less likely to occur.
[0002]
[Prior art]
Examples of the high-temperature regenerator of the absorption chiller / heater include those described in JP-A-8-271090 and JP-A-6-221718. Specifically, a large number of heat transfer tubes in which the solution communicates between the upper part and the lower part of the liquid chamber are installed in the combustion gas flow path of the burner in the regenerator. These high-temperature regenerators use a type of burner in which combustion gas blows out from one nozzle.
[0003]
[Patent Document 1]
JP-A-8-271090 [Patent Document 2]
JP-A-6-221718 [0004]
[Problems to be solved by the invention]
However, if a planar combustion burner with a flat flame shape is used instead of a burner that blows out combustion gas from a single nozzle, the ratio of the flame holding area to the combustion chamber space increases, and the inherent air in the combustion chamber increases. The rate at which the column frequency affects the minute vibration of the flame increases. For this reason, there is a problem that vibration combustion tends to occur when the minute vibration of the flame and the natural air column frequency in the combustion chamber coincide with each other.
[0005]
An object of the present invention is to provide a high-temperature regenerator for an absorption chiller / heater that can avoid vibration combustion caused by the minute vibration of a flame and the natural air column frequency in the combustion chamber.
[0006]
[Means for Solving the Problems]
The object is to form a liquid chamber for holding the solution between the outer cylinder and the inner cylinder, and to provide a combustion chamber for heating the solution inside the inner cylinder, and to the inside of the combustion chamber above and below the inner cylinder. A plurality of solution pipes having a circular or flat cross section in communication with a liquid chamber are installed, and a plate inclined with respect to the flow of the combustion gas is disposed in the exhaust gas passage of the combustion gas that has passed through the combustion chamber. This is achieved by providing the inclined plate with a partition plate that is provided in the upward direction and is perpendicular to the inclined plate and parallel to the flow of combustion gas .
[0008]
Further, the object is to provide a plate inclined with respect to the flow of the combustion gas in the exhaust passage of the combustion gas that has passed through the combustion chamber in an upward direction from the lower end of the exhaust passage and connected to the downstream side of the inclined plate. This is achieved by mounting the plate parallel to the flow of combustion gas.
[0009]
Further, the object is to provide a plate inclined with respect to the flow of combustion gas in the exhaust passage of the combustion gas that has passed through the combustion chamber in an upward direction from the lower end of the exhaust passage, and the combustion gas downstream of the inclined plate. A second plate inclined with respect to the flow of the exhaust gas is provided in a downward direction from the upper end of the exhaust passage, and a third plate inclined with respect to the flow of combustion gas is provided downstream of the inclined plate with respect to the flow of the combustion gas. This is achieved by providing in the upward direction from the lower end of.
[0010]
Further, the above object is to provide a plate inclined with respect to the flow of the combustion gas in the exhaust gas passage passing through the combustion chamber in the upward direction from the lower end of the exhaust passage, and a sound absorbing material is provided on the surface of the inclined plate. Achieved by installing.
[0011]
Further, the above object is to provide a plate inclined with respect to the flow of combustion gas in the exhaust gas passage passing through the combustion chamber in an upward direction from the lower end of the exhaust passage, and the inclined plate is constituted by a punching plate. This is achieved by attaching a sound absorbing material to the back surface of the punching plate.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
1 is a cutaway perspective view of a high temperature regenerator according to a first embodiment of the present invention, FIG. 2 is a vertical sectional view of the high temperature regenerator of FIG. 1, and FIG. 3 is a horizontal sectional view of FIG. .
[0013]
The high-temperature regenerator 1 includes an outer cylinder 101 and an inner cylinder 102, a plurality of solution pipes 103, an air inlet pipe 301, a fuel gas inlet pipe 302, a surface combustion burner 104, a solution inlet pipe 105, a solution outlet pipe 106, a steam outlet pipe 107, It consists of an exhaust passage 108, a chimney 109, and an inclined plate 120. The inner cylinder 102 is inside the outer cylinder 101, and a solution 110 is held between them, and the inner cylinder 102 is immersed in the solution 110. The surface combustion burner 104 passes through the inner cylinder 102 and is attached to the side surface of the outer cylinder 101, and the inside of the inner cylinder 102 is a combustion chamber 111. A liquid chamber 112 is formed by the outer cylinder 101 and the inner cylinder 102, and a plurality of solution pipes 103 communicating with the upper and lower liquid chambers 112 of the inner cylinder 102 are installed upstream and downstream of the combustion chamber 111. be satisfied. The solution tube 103 has a circular or flat horizontal cross section. When the solution tube 103 has a flat shape, a plurality of solution tubes 103 are arranged in a row so that the straight portions of the flat shape are parallel as shown in FIG.
[0014]
There is a combustion gas passage between the solution tube 103 and the solution tube 103, the solution tube 103 upstream of the combustion gas has no fins, and fins are disposed on the combustion gas side surface of the solution tube 103 downstream of the combustion gas. It is. A solution inflow pipe 105 is installed above the solution 110 inside the outer cylinder 101, a solution outflow pipe 106 is provided on the side of the outer cylinder 101, and a vapor outflow pipe 107 is provided on the upper surface.
[0015]
The flame from the surface combustion burner 104 burns while being cooled while passing through a flow path sandwiched between adjacent solution tubes 103, and heats the solution 110 in the solution tube 103 by radiation and convection heat transfer. Thereafter, the combustion reaction is completed to become combustion gas, and the solution 110 in the solution tube 103 is heated by convective heat transfer while passing through a flow path sandwiched between adjacent solution tubes 103 to reach the exhaust passage 108. In the exhaust passage 108, a chimney that passes along the inclined plate 120 installed at a predetermined angle so that the upstream side of the exhaust gas (combustion gas) is the lower end and the downstream side is the upper end and is connected to the upper portion of the exhaust passage 108. It is discharged out through 109.
[0016]
The heated solution 109 is boiled to generate refrigerant vapor, and the generated refrigerant vapor becomes an upward flow and rises in the solution pipe 103, the flow path between the outer cylinder 101 and the inner cylinder 102, and on the liquid level. And exits from the steam outlet pipe 107. On the other hand, the solution 110 is guided into the high-temperature regenerator 1 through the solution inflow pipe 105, and the solution that has been heated and boiled in the high-temperature regenerator 1 and has a high concentration is sent to the outside from the solution outflow pipe 106.
[0017]
As described above, according to the present embodiment, there is no partition between the combustion chamber and the exhaust passage, and the combustion gas that has passed through the combustion chamber is guided to the chimney along the inclined plate provided in the exhaust passage, and from the chimney. Exhausted. For this reason, since the sound reflected from the inclined plate collides with the sound generated by combustion, the sound generated here is attenuated, and the occurrence of natural air column vibration in the combustion chamber is suppressed, and the minute vibration of the flame is suppressed. Generation of vibration combustion that occurs when the number and the natural air column frequency coincide with each other can be avoided.
[0018]
4 is a vertical sectional view of a high temperature regenerator according to a second embodiment of the present invention, and FIG. 5 is a horizontal sectional view of FIG.
[0019]
The difference from the first embodiment is that the inclined plate 120 is provided with a partition plate 121 perpendicular to the inclined plate (inclined plate) 120 and parallel to the flow of combustion gas in the exhaust passage . Incidentally, it may be formed integrally by connecting the inclined plate 120 and the partition plate 121.
[0020]
The flame from the surface combustion burner 104 burns while being cooled while passing through a flow path sandwiched between adjacent solution tubes 103, and heats the solution 110 in the solution tube 103 by radiation and convection heat transfer. Thereafter, the combustion reaction is completed, and the solution 110 in the solution tube 103 is heated by convective heat transfer while passing through a flow path sandwiched between adjacent solution tubes 103, and the inclined plate installed in the exhaust passage 108 It passes along 120 and the partition plate 121, and is discharged outside through a chimney 109 connected to the upper part of the exhaust passage 108.
[0021]
As described above, according to the present embodiment, since the partition plate 121 that is perpendicular to the inclined plate 120 and parallel to the flow of the combustion gas is attached, compared with the first embodiment, from the combustion chamber to the exhaust passage 108. The natural air column frequency in the space can be changed by changing the size of the partition plate 121, and the device can be reduced in size and resources can be saved.
[0022]
6 is a vertical sectional view of a high temperature regenerator according to a third embodiment of the present invention, and FIG. 7 is a horizontal sectional view of FIG. The difference from the first embodiment is that the upstream side of the exhaust gas flowing through the exhaust passage 108 is an inclined plate 120 and the downstream side is a parallel plate 122.
[0023]
The flame from the surface combustion burner 104 burns while being cooled while passing through a flow path sandwiched between adjacent solution tubes 103, and heats the solution 110 in the solution tube 103 by radiation and convection heat transfer. Thereafter, the combustion reaction is completed, and the solution 110 in the solution tube 103 is heated by convective heat transfer while passing through a flow path sandwiched between adjacent solution tubes 103, and the inclined plate installed in the exhaust passage 108 It passes along the parallel plate 122 from 120 and is discharged outside through the chimney 109 connected to the upper part of the exhaust passage 108.
[0024]
As described above, according to the present embodiment, the inclined plate 120 is provided in the exhaust passage 108 for the combustion gas that has passed through the combustion chamber 111, and the plate 122 is attached downstream of the inclined plate 120 in parallel with the flow of the combustion gas. Compared to the first embodiment, the inclination angle of the inclined plate 120 can be freely set regardless of the size of the exhaust passage 108. As a result, even when the shape of the exhaust passage changes, it is not necessary to newly design a system in which vibration combustion is unlikely to occur, and resource saving is possible.
[0025]
FIG. 8 is a vertical sectional view of a high temperature regenerator according to a fourth embodiment of the present invention, and FIG. 9 is a horizontal sectional view of FIG. The difference from the first embodiment is that the exhaust passage 108 is provided with first to third inclined plates 120, 130, 131 having different directions.
[0026]
Exhaust gas that has passed through the combustion chamber passes along the inclined plate 130 and the inclined plate 131 from the inclined plate 120 installed in the exhaust passage 108, passes through the chimney 109 connected to the upper portion of the exhaust passage 108, and goes outside. Is released. That is, the first inclined plate 120 having the lower end on the most upstream side of the exhaust gas flowing through the exhaust passage and the upper end on the downstream side, and then the first inclined plate 120 having the upper end on the upstream side of the gas flow and the lower end on the downstream side. Two inclined plates 130 are provided to change the direction of gas flow from the inclined plate 102, and a third inclined plate 131 in the same direction as the inclined plate 120 is provided. In this way, the exhaust flow path has a labyrinth configuration.
[0027]
As described above, according to this embodiment, since a plurality of inclined plates are attached in the maze shape in the exhaust passage of the combustion gas that has passed through the combustion chamber, the reflection of sound waves is promoted as compared with the first embodiment. And vibration combustion can be made difficult.
[0028]
FIG. 10 is a vertical sectional view of a high temperature regenerator according to a fifth embodiment of the present invention, and FIG. 11 is a horizontal sectional view of FIG.
[0029]
The difference from the first embodiment is that a sound absorbing material 140 is attached to the surface of the inclined plate 120 provided in the exhaust passage 108.
[0030]
The combustion gas exiting the combustion chamber passes along the sound absorbing material 140 on the surface of the inclined plate 120 installed in the exhaust passage 108 and is discharged outside through the chimney 109.
[0031]
As described above, according to the present embodiment, since the sound absorbing material 140 is attached to the surface of the inclined plate 120 in the exhaust passage of the combustion gas that has passed through the combustion chamber, vibration combustion is further performed as compared with the first embodiment. It can be avoided even more. Therefore, the noise reduction can be achieved without using an expensive silencer, which can contribute to resource saving and energy saving.
[0032]
FIG. 12 is a vertical sectional view of a high temperature regenerator according to a sixth embodiment of the present invention, and FIG. 13 is a horizontal sectional view of FIG.
[0033]
The difference from the first embodiment is that the inclined plate 120 of the first embodiment is an inclined plate 150 made of a punching plate, and a sound absorbing material 141 is attached to the back surface of the inclined plate 150. .
[0034]
The flame from the surface combustion burner 104 burns while being cooled while passing through a flow path sandwiched between adjacent solution tubes 103, and heats the solution 110 in the solution tube 103 by radiation and convection heat transfer. Thereafter, the combustion reaction is completed, and the solution 110 in the solution tube 103 is heated by convective heat transfer while passing through a flow path sandwiched between adjacent solution tubes 103, and the inclined plate installed in the exhaust passage 108 It passes along the surface of 150 and is emitted out through the chimney 109.
[0035]
As described above, according to the present embodiment, since the inclined plate 150 constituted by the punching plate and the sound absorbing material 140 are attached to the rear surface of the inclined plate in the exhaust passage of the combustion gas that has passed through the combustion chamber, Occurrence of vibration combustion can be further avoided as compared with the embodiment. Compared to the fifth embodiment, the sound absorbing material is disposed on the back side of the punching plate, so that the sound absorbing material can be prevented from deteriorating and the exhaust passage can be widened, thereby saving resources and downsizing the device. Can contribute.
[0036]
In the first to sixth embodiments, the cross section of the solution tube is circular, but the same effect can be obtained even when the cross section of the solution tube is a flat tube as shown in FIG.
[0037]
In addition, although the high temperature regenerator of this invention was demonstrated as a high temperature regenerator of an absorption chiller / heater, it can also be realized as a high temperature regenerator of an absorption chiller shown in JIS B 8622-1994.
[0038]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, generation | occurrence | production of the oscillating combustion which the fine vibration of a flame and the natural air column frequency in a combustion chamber correspond can be avoided, and the high temperature regenerator which can perform normal combustion can be obtained.
[Brief description of the drawings]
FIG. 1 is a bird's-eye view of a high-temperature regenerator according to a first embodiment of the present invention.
FIG. 2 is a vertical sectional view of FIG.
FIG. 3 is a horizontal sectional view of FIG. 1;
FIG. 4 is a vertical sectional view of a high temperature regenerator according to a second embodiment of the present invention.
FIG. 5 is a horizontal sectional view of FIG. 4;
FIG. 6 is a vertical sectional view of a high temperature regenerator according to a third embodiment of the present invention.
7 is a horizontal sectional view of FIG. 6;
FIG. 8 is a vertical sectional view of a high temperature regenerator according to a fourth embodiment of the present invention.
9 is a horizontal sectional view of FIG.
FIG. 10 is a vertical sectional view of a high temperature regenerator according to a fifth embodiment of the present invention.
11 is a horizontal sectional view of FIG.
FIG. 12 is a vertical sectional view of a high temperature regenerator according to a sixth embodiment of the present invention.
13 is a horizontal sectional view of FIG.
FIG. 14 is a horizontal sectional view of a high-temperature regenerator using a flat tube as the solution tube of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... High temperature regenerator, 101 ... Outer cylinder, 102 ... Inner cylinder, 103 ... Solution pipe, 104 ... Surface combustion burner, 105 ... Solution inflow pipe, 106 ... Solution outflow pipe, 107 ... Steam outflow pipe, 108 ... Exhaust passage, 109 ... Chimney, 110 ... Solution, 111 ... Combustion chamber, 112 ... Liquid chamber, 120 ... Inclined plate, 121 ... Partition plate, 122 ... Parallel plate, 130 ... Second inclined plate, 131 ... Third inclined plate, 140 DESCRIPTION OF SYMBOLS ... Sound-absorbing material, 141 ... Sound-absorbing material, 150 ... Inclined plate comprised of punching plate, 301 ... Air inflow piping, 302 ... Fuel gas inflow piping.

Claims (5)

At least a surface combustion burner, a combustion chamber, a solution flow passage, a refrigerant vapor outflow passage, and a gas exhaust passage are provided to concentrate the dilute solution and separate the refrigerant vapor. The solution is held between the outer cylinder and the inner cylinder. A liquid chamber having a circular or flat cross section, which is provided with a combustion chamber that heats a solution inside the inner cylinder and communicates with a liquid chamber above and below the inner cylinder in the combustion chamber In the high-temperature regenerator of the absorption chiller / heater installed with multiple
The gas exhaust path is provided with an inclined plate having a lower end on the upstream side in the flow direction of the combustion gas and an upper end on the downstream side, and a partition plate perpendicular to the inclined plate and parallel to the flow of the combustion gas is provided on the inclined plate. A high-temperature regenerator of an absorption chiller / heater characterized by that. At least a surface combustion burner, a combustion chamber, a solution flow passage, a refrigerant vapor outflow passage, and a gas exhaust passage are provided to concentrate the dilute solution and separate the refrigerant vapor. The solution is held between the outer cylinder and the inner cylinder. A liquid chamber having a circular or flat cross section, which is provided with a combustion chamber for heating a solution inside the inner cylinder and communicates with a liquid chamber above and below the inner cylinder in the combustion chamber In the high-temperature regenerator of the absorption chiller / heater installed with multiple
The gas exhaust passage is provided with an inclined plate having a lower end on the upstream side in the flow direction of the combustion gas and an upper end on the downstream side, and a plate connected to the upper end of the inclined plate and parallel to the flow of the combustion gas on the downstream side of the combustion gas. A high temperature regenerator of an absorption chiller / heater characterized by that. At least a surface combustion burner, a combustion chamber, a solution flow passage, a refrigerant vapor outflow passage, and a gas exhaust passage are provided to concentrate the dilute solution and separate the refrigerant vapor. The solution is held between the outer cylinder and the inner cylinder. A liquid chamber having a circular or flat cross section, which is provided with a combustion chamber that heats a solution inside the inner cylinder and communicates with a liquid chamber above and below the inner cylinder in the combustion chamber In the high-temperature regenerator of the absorption chiller / heater installed with multiple
A first inclined plate inclined with respect to the flow of the combustion gas is provided in an upper direction from the lower end of the exhaust passage in the exhaust gas passage of the combustion gas that has passed through the combustion chamber, and the combustion gas is provided downstream of the first inclined plate. A second inclined plate inclined downward from the upper end of the exhaust passage and further inclined to the flow of combustion gas downstream of the second inclined plate. Is provided in the upper direction from the lower end of the exhaust passage. In the high-temperature regenerator of the absorption chiller / heater according to any one of claims 1 to 3 ,
A high-temperature regenerator for an absorption chiller-heater, wherein a sound absorbing material is attached to the surface of the inclined plate. In the high-temperature regenerator of the absorption chiller / heater according to any one of claims 1 to 3 ,
The high-temperature regenerator of the absorption chiller / heater is characterized in that the inclined plate is composed of a punching plate, and a sound absorbing material is attached to the back surface of the punching plate.

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